Stereoptican machine



Sept. 19, 1933.; E. H. SHANNON STEREOPTICAN MACHINE '7 Sheets-sheaf 1 Filed July 28, 1951 l Inventor FavzeJiiE 672a]??? 022 flliorney By QM Sept. 19, 1933. E. H. SHANNQN 1,927,222

STEREOPTICAN MACHINE Filed July 28, 1951 7 Sheets-Sheet 2 Invenior aunon M fltiorney Sept. 19, 1933. E. H. SHANNON STEREOPTICAN MACHINE Filed July 28, 1951 '7 Sheets-Sheet 3 ZMw/? fit 1 orney Sept. 19, 1933. E. H. SHANNON STEREOPTICAN MACHINE Filed July 28, 1931 7 Sheets-Sheet 4 q By @mw flllorney p 1933- E. H. SHANNON 1,927,222

STEREOPTICAN MACHINE Filed July 28, 1931 7 Sheets-Sheet 5 By Ewan/$53M Sept. 19, E SHANNON STEREOPTICAN MACHINE Filed July 28, 1951 7 Sheets-Sheet 6 I I I I I I I U flllorney Filed July 28, 1931 '7 Sheets-Sheet 7 Inventor Patented Sept. 19, 1933 UNITED STATES PATENT OFFICE 1,927,222 STEREOPTICAN MACHINE Ernest Hamilton Shannon, Globe, Ariz. Application July 28, 1931. Serial'No. 553,667

2 Claims. (01. 88-24) The present invention relates generally to stereoptican machines and more particularly to new and useful improvements in machines of this character of the type which are adapted to pro+ ject either slides or film strips and has for some of its objects to provide, in a manner as hereinafter set forth, a stereoptican machine embodying a novel construction, combination and arrangement of parts whereby the same is rendered comparatively simple in construction, strong, durable, highly efficient and reliable in operation and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying draw ings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:-

Figure 1 is a view in side elevation of a stereoptican machine in accordance with the present invention. I

Figure 2 is a view in vertical cross section through the machine;

25 Figure 3 is a view in vertical longitudinal section through the machine.

Figure 4 is a fragmentary view in vertical cross section taken substantially on the line 4-4 of Figure 3 looking in the direction indicated by 30 the arrows.

Figure 5 is a view in horizontal section taken substantially on the line 5-5 of Figure 5 looking downwardly, as indicated by the arrows.

Figure 6 is a fragmentary detail view in vertical section through a portion of one of the lens units.

Figure '7 is a View in side elevation showing the means for'adjustably mounting a lens unit forwardly of the machine. 1

Figure 8 is a fragmentary detail view in 1ongitudinal section taken substantially on theline' 8--8 of Figure '7.

Figure 9 is a cross sectional View taken substantially on the line 9-9 of Figure 7.

Figure 10 is a detail view in perspective of one of the closure plates for the slide compartment.

Figure 11 is a fragmentary view in perspective showing a portion of one of the adjustable lens unit supporting rods. 7

Figure 12 is a detail view in perspective of one of the slide carrier engaging springs.

Figure 13 is a view in, front elevation showing the film unit in inoperative position.

Figure 1% is a fragmentary detail view in cross provided with slots which slidably receive the is mounted a lamp socket 17.

section takensubstantially on the lines 14--14 of Figure 13. I

Figure 15 is a view in vertical longitudinal section through theshield which is used when slides are to be projected. 1 s 9 Figure 16 is a View in vertical section taken substantially on the lines 16,16 of Figure 15.

- Figure 1'7 is a detail view in perspective of the lens unit stop member.

Referring now to the drawings in detail, it will be seen that the machine constituting the present invention comprises a base 1 having a bracket 2 mounted for swinging adjustment in a vertical plane thereon about the pivot bolt '3. At its ends the bracket 2 is formed. to provide eyes 4 through which extend the spaced, parallel, coextensive tubes 5, said tubes 5 being fixed in the eyes 4. Extending for longitudinal movement through the stationary or fixed tubes 5 are the, slidable tubes 6 which project forwardly and rearwardly from the tubes 5.

A lamp house '7 is fixed on the rear end portions of the'slidable tubes 6, said lamp house being open at its rear and provided with vertical channels for'slidably receiving a removable closure plate 8. The top of the lamp house 7 comprises a pair of spaced walls having ventilating passages 9 therein.

The bottom of the lamp house comprisesa pair of inturned flanges 10 having notches or recesses 11 in their inner forward portions. A lamp carriage 12 is disposed for longitudinal adjustment between the flanges 10 of the lamp housing, said lamp carriage having upturned end portions 13 inner marginal portions of theflanges 10 for mounting the lamp carriage thereon. The lamp carriage 12 further includes a depending, split socket or sleeve 14 which adjustably receives a vertically disposed standard 15 having a clamp 15 mounted horizontally on its upper end in which The lamp in the socket 1''] is indicated in broken lines and designated by the reference numeral 18. A clamping screw 19 contracts the split socket or sleeve 14 for clamping the standard 15 in position. A clamp 20 is mounted on the lamp socket 17 above the clamp 20 and mounted thereon is a reflector 21 which is disposed behind the lamp 18. The notches or recesses 11 in the flanges 10 are for the passage of the end portions 13 of the lamp carriage 12 when mounting said lamp carriage in position or removing the same from the lamp house. The lamp house '7 is lined with suitable heat insulating and resisting material 22. The

forward wall of the lamp house 7 is provided with a light passage or opening 23.

Extending horizontally across the outer side of the front wall of the lamp house '7 above and below the opening 23 are the channel forming flanges or members 24 through the medium of which the condenser lens casing 25 is slidably and removably mounted in position on the lamp house forwardly of the opening 23. As will be obvious, the condenser casing 25 is removable from the lamp house by sliding the same laterally. The usual condenser lenses 26 are mounted in the casing 25, one of the side walls of the casing 25 being in the form of a hinged door 27 which provides means for inserting or removing the condenser lenses. Bowed springs 28 are mounted in the upper and lower portions of the casing 25 and engaged with the supporting frames of the lenses 26 for frictionally retaining the lenses against vibration or displacement. The forwardmost of the condenser lenses 26 is spaced rear- Wardly from the forward end of the casing 25 to provide a transverse slideway in which is operable a conventional slide carriage (not shown). This slideway is designated by the reference numeral 28. Upper and lower flanges 29 are disposed transversely in the slideway 28 for maintaining the slide supporting frame in properly spaced relation with respect to the forwardmost condenser lens 26 and bowed springs 30 are also mounted in the upper and lower portions of the slideway 28 in spaced, opposed relation to the flanges 29 for engagement with the slide supporting frame for frictionally supporting the same in position in the slideway. The front wall of the casing 25 is provided with an opening or light passage 31.

Mounted on the front wall of the casing 25 .and projecting therefrom is a conical light shield or guard 32. When themachine is not being used to project slides and the carriage is removed from the slideway 28, the sides of said slideway are closed by the removable closure plates 33' having inturned flanges 34 on their top and forward edges, as illustrated to advantage in. Figures 5 and 10 of the drawings.

Mounted for sliding and swinging movement on the forward end portions of the slidable tubes 6 is a film strip unit which is designated generally by the reference numeral 35. The unit 35 comprises a carriage 36 having eyes on one side which are slidable on one of the tubes 6 and having substantially semi-circular recesses on its other side for the reception of the other tube 6, said other side of the carriage 36 resting slidably on said other tube 6. A set screw .37 is threaded through the free side of the carriage 36 for engagement with the adjacent tube 6 for releasably securing said carriage 36 against swinging move-. ment and in adjusted position on the tubes 6. Pairs of forward and rear posts, 38'and 39 respeetively are rigidly mounted on the carriage 36 and mounted between the rear posts 39 is an annulus 40 having lugs .41 projecting from diametrically opposite sides thereof and provided with sockets for the reception of the upper end portions of said posts 39. Set screws 42 are threaded into the ends of the lugs 41 and engaged with the posts 39 for securing the annulus 40 in position thereon. At its ends the annlus 40 is provided with the intur-ned flanges 43.

Clamping rings 44 and 45 are mounted on the end portions of the annulus 40.and are each provided with .inturned flange portions which coact with the flanges 43 for mounting a lens 46 and a glass 4'7 respectively in position. Gaskets 48 are provided between the lens 46 and its respective flange 43 and between the glass 47 and its flange 43 and the inturned flange of the clamping ring 45 and in this manner a leak-proof chamber 49 for the reception of cooling water is provided. A conical light shield or guard 50 is mounted peripherally on the clamping ring 44 and extends rearwardly and telescopically over the shield or guard 32 on the condenser lens casing 25. It will be noted that the element 50 is spaced from the element 32 to provide an air passage but to prevent passage of light.

A substantially U-shaped bracket 51 is rigidly mounted on the condenser lens casing 25 adjacent theforward end thereof and mounted in said bracket is a water receiving tank 52 of substantially cylindrical form having vertically disposed sleeves '53 fixed on its ends in any suitable manner for the reception of the upstanding portions of the bracket 51. Set screws 54 are threaded through thesleeves 53 and engageable with the bracket 51 for securing the tank in position. On its top the tank 52 is provided with a threaded filling neck which is closed by a removable cap 55. A flexible conduit 56 connects the lower portion of the chamber 49 with the lower portion of the tank 52, pet cocks 57 and 58 being provided in the end portions of said conduit 56 adjacent-the tank 52 and the annulus 40, respectively. A flexible conduit 59 connects an upper portion of the tank 52 with an upper portion of the chamber 49, pet cocks 60 and 61 being provided in. said conduit 59 adjacent the tank 52 andthe annulus 40, respectively. It will thus be seen that an ample supply of water to the chamber 49 is assured to prevent or reduce heating of the lens 46 and to reduce to a minimum danger of igniting a film strip when the unit 35 is in use. As the water becomes warm it rises through the conduit 59 into an upper portion of the tank 52 and comparatively cool water will flow through the conduit 56 into the chamber 49, thus giving a continuous circulation. The pet cocks 57, 58, 60 and 61 provide means for shutting off the water both in the tank 52 and in the chamber 49 when it is desired to disassemble the device.

The unit 35 further includes an aperture plate 62 which is mounted vertically on the posts 38, the aperture in said plate being designated by' the reference numeral 63. The aperture plate 62 is disposed in forwardly spaced,opposed relation to the glass 4'7. Disposed vertically on the forward side of the aperture plate 63 and disposed vertically on the forward side of the aperture plate 62 and extending adjacent opposite sides of the aperture 63 are the guide flanges 64 betweenwhich the film strip (not shown) passes.

An elongated, flat, metallic plate 65 is mounted vertically on the forward side of the aperture plate 62 between the guide-flanges 64 and is provided with anaperture which registers with the aperture 63. Upper and lower magazines 66 and 67, respectively, are provided. on the upper and lower ends of the plate 65 and are provided with the film strip passages 68 and 69, respectively. Agate '70 is mounted for swinging movement in a horizontal plane on the forward side of the aperture plate 62 and is provided with a window covered by a glass '71 which is aligned with the aperture 63 when the gate is in its closed or operative position. It is understood; of course, that the film strip passes rearwardly of the gate '70 from the upper magazine 66 to the lower magazine 67.

its

. A horizontally disposed shaft f72 having an same past the aperture 63, as will be obvious. A

flat spring '76 is mounted on the lower portion of the aperture plate 62 and is provided with a substantially V-shaped free end portion which is operatively engageable with the polygonal intermediate portion of the shaft 72 for causing said shaft to be disposed in predetermined positions when the machine is in use to facilitate feeding the film strip a predetermined distance in order that the same will be properly framed when it stops before the aperture 63.

A longitudinally extending plate 77 is mounted on one side of the machine on the adjacent posts 38 and 39, said plate 77 extending forwardly beyond the posts 38 and having fixed laterally thereon a vertically disposed plate 78 having a threaded opening therein in which is threadedly mounted a lense unit 79 which is longitudinally aligned with and spaced forwardly of the aperture 63.

As best seen in Figures 13 and 14 of the drawings, the vertical marginal portions of the plate '78 are rolled to provide the tubes A in one of which a rod B is inserted, said rod B projecting below the tubes and adapted to be swung inwardly and upwardly for engagement beneath the supporting rods of the film unit 35 for limiting the swinging movement of said film unit toward its inoperative position and for supporting said film unit in a substantially horizontal inoperative position. The stop rod 13 may be removable.

When slides are to be projected in the machine the unit 35 is swung laterally to one side or to its inoperative position and a lens unit designated by the reference numeral 80 is'mounted in operative position. The means for mounting the lens unit 80 comprises a pair of rods 81 which are disposed for longitudinal sliding movement in the slidable tubes 6, each rod 81 having a series of spaced sockets 82 therein. Sleeves 83 are removably secured on the forward end portions of the slidable tubes 6 through the medium of set screws 84, said sleeves having internally reduced portions projecting forwardly of the tubes 6, as illustrated to advantage in Figure 8 of the drawings. Set screws 85 are threaded through the forwardly projecting portions of the sleeves 83 and are engageable in the sockets 82 for securing the rods 81 in longitudinally adjusted position.

A cross member 86 is slidably mounted for lon-. gitudinal adjustment on the rods 81, said cross member having openings extending therethrough for the passage of the rods. Set screws 87 are 1 threaded into the ends of the cross member 86 for adjustably mounting'the ring thereon. A

set screw 92 is threaded through the eye 91 and engageable with the member 88 for securing 3 the ring 90 in adjusted position longitudinally-there on. The lens unit- 80 isfthreaded through the ring 90. A stop member 93 is mounted on the cross member 86 for engagement by the arm 88 1 for limiting the swinging movement'of saidrarm in'one directio'n'to facilitate the positioning of the lens unit 80 when said lens unit is swung into its operative position.

When glass slides only are to be used, the entire film unit 35, the tank 52 and its supports and the fluid cooled lens unit may be removed if desired. A light shield C may then be mounted in position as seen in Figure 15 of the drawings, said light shield being tapered toward its forward end and having its end portions telescoped over the guard 32 and the rear end portion of the lens unit 80. Thus, a very compact machine is provided.

Asbest seen in Figure 6 of the drawings, bolts 94 extend between the clamping rings 44 and 45 for drawing the same toward each other .for clamping the lens 46 and the glass 47 in position. The light shield or guard 50 is provided.

with an internal flange 95 having openings therein through which the bolts 94 passfor securing said shield or guard in position. Set screws 96 (see Figure 4) are threaded upwardly into the end portions 13 of the lamp carriage 12 for engagement with the flanges 10 for securing said lamp carriage in adjusted position.

When film strips only are to be used, the lens unit 80 and its supporting elements together with the light shield C may be removed thereby making the machine comparatively compact. It may be well to here state that it is necessary to remove the light shield C whenever the film unit 35 is to be used.

It is believed that the many advantages of a machine in accordance with this invention will be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

1. A stereoptican machine comprising a supporting structure, posts rising from the supporting structure, an annulus formed with an inturned flange at each end, means on the opposite sides of the annulus for attachment to said posts, a lens mounted on one end of the annulus and bearing against one flange, a glass plate mounted on the other end of the annulus and bearing against the otherflange, clamping rings encircling the annulus and engaged with the lens and glass plate to provide a water cooled chamber within the annulus between said lens and said glass plate, a water tank supported above said annulus, a conduit connecting the upper portion of the tank with the upper portion of said chamber, and a conduit connecting the lower portion of the tank with the lower portion of said chamber.

2. A stereoptican machine comprising a supporting structure, posts rising from the supporting structure, an annulus formed with an inturned flange at each end, means on the opposite sides of the annulus for attachment to said posts, a lens mounted on one end of the annulus and bearing against one flange, a glass plate mounted on the other end of the annulus and bearing against the other flange, clamping rings encircling the annulus and engaged with the lens and glass plate to provide a water cooled chamber withinthe annulus between said lens and said glass plate, a water tank supported above said annulus, a conduit connecting the upper portion of the tank with the upper portion of said chamber, and a conduit connecting 

